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#ifndef CRYPTO_H
#define CRYPTO_H
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ntp_fp.h>
#include <ntp.h>
#include <ntp_stdlib.h>
#include <ntp_md5.h> /* provides OpenSSL digest API */
#include "utilities.h"
#include "sntp-opts.h"
#define LEN_PKT_MAC LEN_PKT_NOMAC + sizeof(u_int32)
/* #include "sntp-opts.h" */
struct key {
struct key * next;
int key_id;
int key_len;
int typei;
char typen[20];
char key_seq[64];
};
extern int auth_init(const char *keyfile, struct key **keys);
extern void get_key(int key_id, struct key **d_key);
extern int make_mac(const void *pkt_data, int pkt_size, int mac_size,
const struct key *cmp_key, void *digest);
extern int auth_md5(const void *pkt_data, int pkt_size, int mac_size,
const struct key *cmp_key);
#endif
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